org.basex.query.xquery.expr
Class Order

java.lang.Object
  org.basex.query.xquery.expr.Order

public final class Order
extends java.lang.Object

Order by expression.

Author:

Workgroup DBIS, University of Konstanz 2005-08, ISC License, Christian Gruen

Constructor Summary

Order(Ord[] e)
Constructor.

Method Summary

void	add(XQContext ctx) Adds the items to be sorted.
void	comp(XQContext ctx) Compiles the expressions to be sorted.
Iter	iter(SeqIter sq) Returns an array with the item order.
void	plan(Serializer ser) Serializes the abstract syntax tree.
java.lang.String	toString()

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

Order

public Order(Ord[] e)

Constructor.

Parameters:

e - expressions

Method Detail

comp

public void comp(XQContext ctx)
          throws XQException

Compiles the expressions to be sorted.

Parameters:

ctx - query context

Throws:

XQException - evaluation exception

add

public void add(XQContext ctx)
         throws XQException

Adds the items to be sorted.

Parameters:

ctx - query context

Throws:

XQException - evaluation exception

iter

public Iter iter(SeqIter sq)

Returns an array with the item order.

Parameters:

sq - temporary sequence

Returns:

resulting, ordered item

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object

plan

public void plan(Serializer ser)
          throws java.io.IOException

Serializes the abstract syntax tree.

Parameters:

ser - serializer

Throws:

java.io.IOException - exception